My 3 inch Synodontis Eupterus he's living with i think feels like he doesn't have a good enough hiding spot so he's out and about more than usual. Should i be concerned? I also have a couple 1 inch ghost shrimp in the tank for extra scavenger duties.....how long do you think they will last with my new 4 inch poly in there? Just kinda wondering, wasn't sure if they liked ghost shrimp or not lol Thanks!